// Copyright 2022 Smallworld gpu
// This file is part of gpu.

// gpu is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// gpu is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with gpu.  If not, see <http://www.gnu.org/licenses/>.

#![cfg_attr(not(feature = "std"), no_std)]

//! Core gpu types.

pub mod assets;

use sp_runtime::{
	generic,
	traits::{IdentifyAccount, Verify},
	MultiSignature,
};

pub use sp_runtime::traits::{BlakeTwo256, Hash as HashT};

/// The block number type used by gpu.
/// 32-bits will allow for 136 years of blocks assuming 1 block per second.
pub type BlockNumber = u32;

/// An instant or duration in time.
pub type Moment = u64;

/// Alias to type for a signature for a transaction on the relay chain. This allows one of several
/// kinds of underlying crypto to be used, so isn't a fixed size when encoded.
pub type Signature = MultiSignature;

/// Alias to the public key used for this chain, actually a `MultiSigner`. Like the signature, this
/// also isn't a fixed size when encoded, as different cryptos have different size public keys.
pub type AccountPublic = <Signature as Verify>::Signer;

/// Alias to the opaque account ID type for this chain, actually a `AccountId32`. This is always
/// 32 bytes.
pub type AccountId = <AccountPublic as IdentifyAccount>::AccountId;

/// The type for looking up accounts. We don't expect more than 4 billion of them.
pub type AccountIndex = u32;

/// Identifier for a chain. 32-bit should be plenty.
pub type ChainId = u32;

/// A hash of some data used by the relay chain.
pub type Hash = sp_core::H256;

/// Index of a transaction in the relay chain. 32-bit should be plenty.
pub type Nonce = u32;

/// The balance of an account.
/// 128-bits (or 38 significant decimal figures) will allow for 10 m currency (`10^7`) at a resolution
/// to all for one second's worth of an annualised 50% reward be paid to a unit holder (`10^11` unit
/// denomination), or `10^18` total atomic units, to grow at 50%/year for 51 years (`10^9` multiplier)
/// for an eventual total of `10^27` units (27 significant decimal figures).
/// We round denomination to `10^12` (12 SDF), and leave the other redundancy at the upper end so
/// that 32 bits may be multiplied with a balance in 128 bits without worrying about overflow.
pub type Balance = u128;

/// Header type.
pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
/// Block type.
pub type Block = generic::Block<Header, UncheckedExtrinsic>;
/// Block ID.
pub type BlockId = generic::BlockId<Block>;

/// Opaque, encoded, unchecked extrinsic.
pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;

/// Id used for identifying assets.
///
/// AssetId allocation:
/// [1; 2^32-1]     Custom user assets (permissionless)
/// [2^32; 2^64-1]  Statemine assets (simple map)
/// [2^64; 2^128-1] Ecosystem assets
/// 2^128-1         Relay chain token (KSM)
pub type AssetId = u128;

/// Digest item type.
pub type DigestItem = generic::DigestItem;
